Houston's Trusted Foundation Repair Experts Since 1999.

The Houston area sits on some of the most expansive clay soil in the United States. This clay swells significantly when it absorbs water and shrinks when it dries out — sometimes by several inches per foot of depth. A home that was perfectly level when it was built can settle unevenly over years as the soil beneath it moves through wet and dry cycles.

The key word is uneven. If the entire foundation moved the same amount in the same direction, you'd barely notice. The problem is differential settlement — one side gets wet while the other stays dry, one corner sits over clay while another sits over fill soil, one area has a tree pulling moisture while another is shaded. That imbalance is what creates sloping floors, sticking doors, diagonal wall cracks, and stair-step brick patterns.

The Biggest Causes of Houston Foundation Movement

• Drainage problems — short downspouts, negative grading, clogged gutters, and soggy flowerbeds keep soil too wet on one side of the home. That over-saturated side swells while a dry side shrinks.
• Drought cycles — Houston dry spells pull moisture out of clay unevenly. Areas with more sun exposure, less irrigation, or more tree root competition lose moisture faster.
• Tree roots — large trees, especially live oaks, pull enormous amounts of moisture from the soil. A tree within 20 feet of your foundation can create a dry zone that drops the slab on that side.
• Plumbing leaks — a slow leak under the slab saturates the soil in a concentrated area, creating a localized soft zone that can cause significant settlement.
• Original construction — homes built on poorly compacted fill soil or without adequate drainage planning settle faster and more unevenly.

The good news: the same understanding that explains the problem also points to the fix. Duratech inspectors check drainage, soil conditions, and movement patterns — not just the cracks. When drainage is part of the problem, we address it. When piering is needed, we scope it accurately. Schedule a free inspection to find out what's driving your home's movement.